Which kind of rubber material has the best corrosion resistance?
Rubber can be divided into many kinds according to the material. But the best corrosion resistance is chloroprene rubber. Chloroprene rubber is produced by emulsion polymerization process, and the production process is mostly batch polymerization. The polymerization temperature was controlled at 40~60 DEG C, and the conversion rate was about 90%. The polymerization temperature, the final conversion rate is too high, or the air (oxygen) in the polymerization process will lead to lower quality of the products. In production, the molecular weight was adjusted with sulfur Tyuram (four alkyl amino sulfur two sulfide) system. The main drawback of sulfur - Lamb system is that sulfur bonds are not stable enough, which is one of the important reasons for storage. If the molecular weight is adjusted with thiol, this performance can be improved. Neoprene is different from ordinary synthetic rubber. It does not need to be vulcanized by sulfur. It is vulcanized with Zinc Oxide and Magnesium Oxide. There are many varieties and grades of chloroprene rubber, which is one of the most popular rubber in synthetic rubber.
Excellent oil resistance and chemical resistance. Weatherability and ozone resistance are second only to that of ethylene propylene rubber and butyl rubber. The heat resistance and the nitrile rubber, the decomposition temperature of 230 ~ 260 DEG C, short-term resistance at 120 to 150 DEG C, used for a long time at 80 to 100 DEG C, with a certain flame retardancy. Oil resistance second only to nbr. Good resistance to inorganic acids and alkalis. Cold resistance is slightly worse, electrical insulation is poor. Rubber poor storage stability, will have a "sulfur" phenomenon, Mooney viscosity increased, hard rubber. Foreign brands are: AD 1, 30 (USA), A-90 (Japan), 320 (Germany), and MA40S (France).
Good physical and mechanical properties, oil resistance, heat resistance, fire resistance, sunlight resistance, ozone resistance, acid and alkali resistance, chemical reagents. The disadvantage is cold resistance and poor storage stability. With high tensile strength, elongation and reversible crystallinity, good adhesion. Aging resistance, heat resistance
